Leupold Mark 4 Rings and Bases For Sale

I am selling a pair of Mark 4 rings, 30mm, steel, matte black. I used these for a Leupold scope with had a 50MM objective. Additionally, I am selling a pair of Mark 4 two piece bases, matte black. The rings were lapped, but other than that they are in pefect condiction. I am asking $200